【摘要】 目前,中国城市地铁建设欣欣向荣,城市地下铁道往往不以单孔隧道形式出现,大多数采用水平双孔平行隧道,在盾构施工推进时,施工方式不同,对周边环境的影响也就不同。本文以某城市地铁平行盾构推进为实际工程背景,分析比较了四种不同施工方案所引起的地表沉降量,寻求其变化规律,为今后地铁设计及施工给予一定的指导。更多还原

【Abstract】 Construction of subway in China is in the ascendant. The double - tube parallel tunnels are much popular than the single tunnel. The impact to the surroundings is different as the constructing method is different. Verified with a really subway project, the ground sedimentation is compared under four different constructing method, in order to find the law between the ground sedimentation and the method. So as to provide a theoretical basis for the metro designing and construction .更多还原